search for: environmentnam

I noticed the new environmentName in R 2.5.0dev. Thus I gather that each environment has: (1) a name (2) a hex value so 1. environmentName gets the name. Is there any way to set the name? 2. is there any way to get the hex value for an environment other than doing: e <- new.env() capture.output(e)

Hello All, ?environmentName shows how to get the environment name. But I don't see how to set the name in the first place. Could you tell me where to look for the function that set the environment name? -- Tom

...list of functions (or variables) in a "normal" way? I used 'ls("package:base")' for the exercise, because I saw this call used somewhere as an example, but I couldn't find that "package:" syntax documented under ls()... Also found this confusing: > environmentName(globalenv()) [1] "R_GlobalEnv" > ls("R_GlobalEnv") Error in as.environment(pos) : no item called "R_GlobalEnv" on the search list So I'm not sure if "package:base" is naming an environment, or if there are different ways to name env...

...les) > in a "normal" way? I used 'ls("package:base")' for the exercise, > because I saw this call used somewhere as an example, but I couldn't > find that "package:" syntax documented under ls()... Also found this > confusing: > > > environmentName(globalenv()) > [1] "R_GlobalEnv" > > ls("R_GlobalEnv") > Error in as.environment(pos) : > no item called "R_GlobalEnv" on the search list > > So I'm not sure if "package:base" is naming an environment, or if > th...

How to remove all R objects in the RAM except for a few specified ones? rm(list=ls()) removes all R objects in the R work space. Another question is that whether removing all R objects actually releases the RAM? Thanks. -- View this message in context: http://r.789695.n4.nabble.com/How-to-remove-all-objects-except-a-few-specified-objects-tp2335651p2335651.html Sent from the R help mailing list

Hi, from the man page ?methods, I expected to be able to build pairs (class,package) for a given S3 method, e.g., print, using attr(methods(print), 'info'). However all the methods, except the ones defined in base or S4 methods, get the 'from' value "registered S3method for print", instead of the actual package name (see below for the first rows). Is this normal

...|| nchar(string) > maxlen) paste(substring(string[1], 1, maxlen), "...", sep = "") else string } myDeparse <- function(object) { if (!is.environment(object)) { deparse(object) } else { ename <- environmentName(object) if (ename == "") ename <- "<unnamed env>" paste(sep = "", "<", ename, "> ", paste(collapse = " ", objects(object))) } } cat(rep(" ",...

I suppose it would work, although "=>" is rather a descriptive symbol and less a function. But choosing between quoting: "A + B => C" and a regular function: A + B %=>% C probably quoting is the most straightforward, as the result of the foo() function has to be a string anyways (which is parsed by other functions). On Tue, Apr 12, 2016 at 6:20 PM, Richard M.

...your use case, maybe something like .S3methodsInNamespace <- function(envir, pattern) { mtable <- get(".__S3MethodsTable__.", envir = asNamespace(envir)) methods <- ls(mtable, pattern = pattern) env <- vapply(methods, function(x) { environmentName(environment(get(x, mtable))) }, character(1)) setNames(names(env), unname(env)) } followed by nmspc = loadedNamespaces() lapply(setNames(nmspc, nmspc), .S3methodsInNamespace, "^plot.") which reveals the different meanings of 'from', e.g., > l...

...hodsInNamespace <- function(envir, pattern) { >>> mtable <- get(".__S3MethodsTable__.", envir = asNamespace(envir)) >>> methods <- ls(mtable, pattern = pattern) >>> env <- vapply(methods, function(x) { >>> environmentName(environment(get(x, mtable))) >>> }, character(1)) >>> setNames(names(env), unname(env)) >>> } >>> >>> >>> followed by >>> >>> nmspc = loadedNamespaces() >>> lapply(setNames(nmspc, nmspc), .S3me...

> I wanted to simulate the Matlab DISPLAY function for some time now. After seeing a recent proposal by Gabor Grothendieck I came up with the following solution, display <- function(...) { my_names <- lapply(substitute(placeholderFunction(...))[-1], deparse) for (my in my_names) cat(my, "=", eval(parse(text=my)), "\n", sep=" ") } that works about as

...r the default methods, but names would be matched for S3 and S4 methods and in the case of '!' the argument name differed between S3 and S4 methods.) o Imports environments of name spaces are named (as "imports:foo"), and so are known e.g. to environmentName(). o Package 'stats4' uses lazy-loading not SaveImage (which is now deprecated). o Installing help for a package now parses the .Rd file only once, rather than once for each type. o PCRE has been updated to version 7.2. o bzip2 has been updated t...

...r the default methods, but names would be matched for S3 and S4 methods and in the case of '!' the argument name differed between S3 and S4 methods.) o Imports environments of name spaces are named (as "imports:foo"), and so are known e.g. to environmentName(). o Package 'stats4' uses lazy-loading not SaveImage (which is now deprecated). o Installing help for a package now parses the .Rd file only once, rather than once for each type. o PCRE has been updated to version 7.2. o bzip2 has been updated t...

...function, which also has a replacement form, and there are conversion methods to and from numeric, which also allow the specification of units. Objects of this class can also be stored in data frames now. A format() method has been added, and the print method was revised. o New function environmentName() to give the print name of environments such as "namespace:base". This is now used by str(). o New function env.profile() provides R level access to summary statistics on environments. In a related patch, new.env() now allows the user to specify an initial size for a hashed e...

...function, which also has a replacement form, and there are conversion methods to and from numeric, which also allow the specification of units. Objects of this class can also be stored in data frames now. A format() method has been added, and the print method was revised. o New function environmentName() to give the print name of environments such as "namespace:base". This is now used by str(). o New function env.profile() provides R level access to summary statistics on environments. In a related patch, new.env() now allows the user to specify an initial size for a hashed e...